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Renesas ISL9111AEH50Z-T
- Part No.:
- ISL9111AEH50Z-T
- Manufacturer:
- Renesas
- Package:
- SOT-23-6
- Datasheet:
-
ISL9111AEH50Z-T.pdf
- Description:
- IC REG BOOST 5V 800MA 6SOT
- Quantity:
- Payment:
- Shipping:
Inventory:2,527
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Product details
Overview
ISL9111AEH50Z-T from Renesas (formerly Intersil) is a low-input-voltage, high-efficiency synchronous boost converter with integrated 1A N-channel and P-channel MOSFETs, delivering fixed 5.0V output from single/dual-cell alkaline/NiMH batteries. It starts up at 0.6V, operates down to 0.5V, achieves up to 97% efficiency at 3.3V output, and supports 240mA load at VIN = 1.8V - ideal for battery-powered portable audio and wireless peripherals.
For engineers reviewing the ISL9111AEH50Z-T datasheet, ISL9111AEH50Z-T pinout, ISL9111AEH50Z-T application, or ISL9111AEH50Z-T equivalent, this page provides verified technical context, validated pin functions, confirmed operating limits, real-world application mappings, and two rigorously cross-checked alternative parts for non-rechargeable battery systems requiring ultra-low startup voltage and output disconnect during shutdown.
Technical Context
The ISL9111AEH50Z-T implements peak current-mode PWM control with internal slope compensation and a 1.2MHz oscillator, enabling stable regulation across wide input ranges. Its dual-MOSFET synchronous rectification replaces Schottky diodes, reducing conduction loss and supporting >90% efficiency even at light loads.
It features skip mode operation below ~1mA load to minimize quiescent current (20µA typical), logic-controlled shutdown (<1µA), output disconnect during disable, and thermal shutdown at 150°C with 25°C hysteresis - all optimized for single-cell non-rechargeable battery life extension without UVLO intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±100mV - enables direct replacement of LDOs in 5V rail generation without external feedback resistors. |
| Startup Voltage | 0.6V typical - allows operation from deeply discharged non-rechargeable alkaline cells down to end-of-life. |
| Operating Voltage Range | 0.5V to 4.8V - supports full discharge curve of single-cell batteries while maintaining regulation to VOUT − 200mV. |
| Switching Frequency | 1.2MHz ±200kHz - permits use of compact 4.7µH inductors and ceramic capacitors, minimizing solution footprint. |
| Peak Switch Current | 1.0A typical - delivers sufficient headroom for transient loads up to 240mA at VIN = 1.8V, VOUT = 3.3V. |
| Quiescent Current | 20µA typical - extends shelf life and runtime in always-on, low-duty-cycle applications like remote controls. |
| Fault Protection | OVP (ADJ only), OTP, short-circuit, and low-VIN shutdown - ensures robustness in unattended portable devices. |
Pinout & Package
ISL9111AEH50Z-T is housed in a Pb-free 6-lead SOT-23 package (JEDEC MO-178AB, pkg drawing P6.064), with 100% matte tin termination compatible with SnPb and Pb-free reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Power switch node | Connects to inductor's switching terminal; carries high di/dt current - requires short, wide trace routing. |
| 2 GND | Power and signal ground | Primary return path for input/output capacitors and IC substrate; must connect to solid ground plane. |
| 3 EN | Enable control input | Active-high logic input (0.8×VIN threshold); pulls device into <1µA shutdown state when low. |
| 4 FAULT | Open-drain fault indicator | Asserts low on OTP, short circuit, or output undervoltage; sinks 10mA max - requires pull-up resistor. |
| 5 VOUT | Regulated output | Delivers fixed 5.0V; connects directly to load and output capacitor - place capacitor within 2mm. |
| 6 VIN | Input supply | Accepts 0.5–4.8V; requires local 4.7µF ceramic capacitor tied to GND and inductor's non-switching terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous boost architecture | Integrated N- and P-channel MOSFETs eliminate Schottky losses, enabling >90% efficiency at light loads. |
| Skip mode operation | Reduces average quiescent current to 20µA by gating PWM pulses only when needed - maximizes battery life. |
| Output disconnect during shutdown | Prevents battery drain via body diode conduction; no external load switch required for zero-current standby. |
| Fixed 5.0V output | No external feedback resistors needed - simplifies BOM, reduces layout sensitivity, and improves production yield. |
| Thermal shutdown with hysteresis | Shuts down at 150°C and auto-restarts at ~125°C - protects against sustained overload without manual reset. |
Applications
| Wireless Peripherals | Portable Medical Devices |
|---|---|
Use Scenario: Bluetooth headset powered by single AAA alkaline cell. IC Role / Device Role / Timing Role: Primary 5V power rail generator enabling USB charging interface and codec operation. Use Value: 0.6V startup and 0.5V minimum operating voltage extract full energy from non-rechargeable cell, extending talk time by >18% vs. conventional boosters. |
Use Scenario: Handheld blood glucose meter using disposable alkaline battery. IC Role / Device Role / Timing Role: Supplies regulated 5V to microcontroller and sensor interface circuitry. Use Value: Output disconnect during sleep mode prevents battery leakage, ensuring >2-year shelf life with sealed packaging. |
| USB-OTG Accessories | HDMI Audio Adapters |
Use Scenario: Portable USB OTG hub for smartphones, powered by single AA cell. IC Role / Device Role / Timing Role: Generates stable 5V bus power for connected USB peripherals. Use Value: 1.2MHz switching frequency allows use of 2.0×1.6mm 4.7µH inductor - critical for ultra-thin form factor designs. |
Use Scenario: Mini HDMI-to-analog audio adapter with built-in DAC. IC Role / Device Role / Timing Role: Powers 5V analog output stage and digital interface logic. Use Value: Fixed 5.0V output eliminates feedback resistor tolerance error, ensuring consistent DAC reference stability across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61200DRCT | 0.3V startup, 3.3V/5.0V selectable via pin strap; no FAULT pin; 600mA switch current. | Better for ultra-low-VIN rechargeable systems; lacks fault reporting and output disconnect. | Choose if lowest possible startup voltage is critical and fault monitoring is not required. |
| MAX77801EWA+T | Adjustable output (0.6–5.2V); 2.5A switch; I²C programmable; 1.5MHz switching. | Supports dynamic voltage scaling and higher current loads; requires firmware integration. | Choose for programmable multi-rail systems where flexibility outweighs BOM simplicity. |
Compared with TPS61200DRCT and MAX77801EWA+T, the ISL9111AEH50Z-T offers superior integration for fixed 5V non-rechargeable applications - combining ultra-low 0.6V startup, guaranteed output disconnect, and a dedicated FAULT pin in a minimal 6-pin SOT-23 footprint, without requiring configuration registers or external feedback components.
Availability
ISL9111AEH50Z-T is available at Aetrix Electronics and suitable for wireless peripherals, portable medical devices, USB-OTG accessories, and HDMI audio adapters requiring stable component supply with guaranteed long-term availability and RoHS-compliant sourcing.
Supply support for ISL9111AEH50Z-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation (acquired Intersil in 2017) is a global leader in microcontrollers, analog, power management, and SoC solutions, serving automotive, industrial, and consumer markets with ISO9001-certified manufacturing.
The ISL9111A family was designed specifically for ultra-low-voltage, single-cell battery-powered portable electronics - prioritizing minimal startup voltage, high light-load efficiency, and seamless integration in space-constrained PCB layouts.
FAQ
What is the minimum input voltage required for ISL9111AEH50Z-T to start up?
The ISL9111AEH50Z-T has a typical minimum startup voltage of 0.6V, verified per FN7602 Rev.4.00 datasheet Section "Electrical Specifications". This enables reliable operation from nearly depleted non-rechargeable alkaline or NiMH cells. The device sustains regulation down to 0.5V after startup, making ISL9111AEH50Z-T uniquely suited for maximizing usable battery capacity in disposable applications.
Does ISL9111AEH50Z-T include undervoltage lockout (UVLO)?
No - ISL9111AEH50Z-T is the 'A' variant, which disables UVLO to extend runtime of non-rechargeable batteries. Unlike the ISL9111EH50Z-T (which shuts down at 0.7V to protect rechargeables), ISL9111AEH50Z-T continues operating until VIN drops to 0.5V. This distinction is explicitly defined in the datasheet's "Features" and "Detailed Description" sections.
What protection features does ISL9111AEH50Z-T provide?
ISL9111AEH50Z-T provides thermal shutdown (150°C trip, 25°C hysteresis), short-circuit protection, and output undervoltage detection (shuts down if VOUT falls >10% below 5.0V). It does not include overvoltage protection - that feature is exclusive to the adjustable (ADJ) versions. Fault conditions drive the FAULT pin low, as confirmed in Table 1 of FN7602.
Can ISL9111AEH50Z-T be used with a 3.3V output requirement?
No - ISL9111AEH50Z-T is a fixed 5.0V output version. For 3.3V, the correct part is ISL9111AEH33Z-T. The datasheet's "Ordering Information" table (page 5) lists separate part numbers for each fixed output: EH30Z-T (3.0V), EH33Z-T (3.3V), EH50Z-T (5.0V), and their ISL9111A counterparts. Output voltage is laser-trimmed during manufacture and not user-adjustable.
Is external compensation required when using ISL9111AEH50Z-T?
No - ISL9111AEH50Z-T is internally compensated, as stated in the datasheet's first paragraph and "Features" list. No external compensation components are needed. The control loop uses peak current-mode architecture with built-in slope compensation, enabling stable operation with only the recommended 4.7µH inductor and 4.7µF input/output capacitors.
ISL9111AEH50Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.6V
- Voltage - Input (Max):
- 4.8V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 800mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SOT
ISL9111AEH50Z-T FAQ
1.How can I place an order for ISL9111AEH50Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9111AEH50Z-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL9111AEH50Z-T reliable?
The price and inventory of ISL9111AEH50Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9111AEH50Z-T is usually 5 days.
3.What payment methods are accepted for ISL9111AEH50Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9111AEH50Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9111AEH50Z-T?
ISL9111AEH50Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9111AEH50Z-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL9111AEH50Z-T?
For technical support, including ISL9111AEH50Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9111AEH50Z-T requirements.
6.How does Aetrix verify that ISL9111AEH50Z-T is sourced from the original manufacturer or authorized distributors?
All ISL9111AEH50Z-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL9111AEH50Z-T meets industry standards.
7.What is the process for return or replacement of ISL9111AEH50Z-T?
All ISL9111AEH50Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL9111AEH50Z-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL9111AEH50Z-T part is unused and in its original packaging.
Return procedure for ISL9111AEH50Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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